Alarm mechanism.



G. S. OLSON.

ALARM MECHANISM.

APPLIOATION FILED JUNE 13, 1911.

1,036,692, Patented Aug. 27, 1912.

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0. S. OLSON.

ALARM MECHANISM. APPLICATION FILED JUNE 13, 1911.

1,036,692, Patented Aug. 27, 1912.

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CHARLES S. OLSON, OF DULUTH, MINNESOTA, ASSIGNOR TO HERCULES MANUFAC- TUBING COMPANY, A CORPORATION OF MINNESOTA.

ALARM MECHANISM.

To all whom it may concern:

Be it known that I, CHARLES S. OLSON, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Alarm Mechanism; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to alarm apparatus and has for its object the provision of a simple and eflicient alarm that may be arranged to guard one or more avenues of attack.

It consists of the constructions, combinationsand arrangements of parts hereinafter described and claimed.

In the drawings, Figure 1 is a perspective View of my said invention. Fig. 2 is a side elevation of the same, partly broken away, and omitting the hereinafter described cover.

In the drawings, 1 is a casing, forming a primary support. Formed on or secured to said support is a stationary segmental rack 2, and a stationary segmental cartridge holder 3, the axis of which cartridge holder is in prolongation of the axis of said segmental rack. Said cartridge holder is provided with one or more radially directed apertures 3 for receiving cartridges one of which may be placed in each aperture. Pivoted to said support in the line of the axis of said rack and cartridge holder, and extending upward preferably between said rack and cartridge holder is a lever 41 provided with a bracket 4* of any suitable construction, which bracket carries a housing 4 extending over said cartridge holder, within which housing is positioned a reciprocatable firing pin 5, adapted to be operated by a spring 6 of any suitable construction or position, preferably inclosed in said housing, said pin is provided with a shoulder 5 extending out of said housing through a slot 1 formed in the wall thereof. Rotatably Specification of Letters Patent.

Application filed. June 13, 1911.

Patented Aug. 27, 1912. Serial No. 632,901.

mounted on saidlever, is a gear 7 engaging said rack, and-mounted on the axle of said gear and adapted to turn therewith is a ratchet wheel 8 Loosely mounted on the axle of said gear and ratchet wheel is a gear 9, provided upon one face with a'pivoted dog 9 adapted to engage said ratchet wheel and transmit driving power from said ratchet wheel to said gear 9 in one direction of rotation, said dogbeingadaptedto slip on said ratchet wheel during the opposite rotation thereof. One face of said gear 9 is provided with one or more outwardly extending pins, as 9", adapted to engage the shoulderjon said firing pin and to retract said pin against the action of said spring. Said gear 9 is adapted to mesh with and drive in one direction a pinion 10 carried by said lever, upon the shaft of which pinion 10 is mounted a gear 11 adapted to rotate therewith and to engage and drive a pinion 13 carried by said lever. Upon the shaft of said pinion 13 is mounted a ratchet wheel 14 adapted to'turn with said shaft. A dog 15 is pivotally secured to said support and is adapted in operation. to engage said ratchet wheel 14 and hold the same against the driving power transmitted from said pinion 7. In order to retract said dog 15 in order to permit of the operation of the alarm, I preferably provide an electro-magnet 16 adapted in operation to attract said dog and withdraw it from engagement with said ratchet wheel 14. Said magnet may be included in a normally open electric circuit comprising bindingposts 16 and 16*, an electric battery 16 circuit wires 16 and normally open or separated contact plates 16 and 16 and a circuit opening orclosing switch 16 One of said contact plates may be positioned on the side rail of a window sash 17, and the other a little above it on the window casing 18, and so arranged that upon lifting the sash a short distance the contact plates will come into contact with each other and close the circuit. But said dog 15 may if desired be retracted by any suitable and desirable means or mechanism adapted to be operated by the power against which it is desired to obtain an alarm. Said casing is preferably provided with a cover 19, and a sound and smoke vent 20. In the drawings said cover is shownonly in Fig. 1, and said electric circuit is shown only in Fig. 2, except said magnet which is shown in both of said figures. A speed governor, comprising a worm 21 and'fan 21 is mounted on a bracket 22.

said window being closed, if, now, a burglar approach and pry open said window the plates 16 and l6 come into, contact, thus closing the electric circuit and actuating the magnet. Said magnet thereupon attracts said dog 15, disengaging it from said ratchet 14:. The lever now swmgs downward by gravity, carrying the firing pin successively over the cartrldges- At the same time the gear 7 is moved by sa1d lever over said rack which causes said gear 7 and its shaft to,

rotate, thus causing the rotation of the ratchet wheel 8, which by means of the dog 9 is at such time locked to the gear 9 which is thus caused to rotate so as to successively and at regular intervals bring the'pins 9 into lifting contact with the shoulder on the firing pin. As the gear 9 continues to rotate, the pins 9 slip from beneath the shoulder on the raised firing-pin, which is then operated against the cartridge temporarily beneath it so as to fire the same and thereby give alarm. After the lever has droppe the device may be re -set by breaking the electric circuit, raising the lever, engaging the dog 15 and refilling the cartridge holder.

What I claim is 1. In an alarm mechanism, the combination with a suitable support of a stationary segmental rack, a stationary segmental cartridge-holder having its axis, coincident with the axis of said rack; a pivoted lever having its axis coincident with the axes of said rack and holder, a reciprocatable firing pin carried by said lever over the periphery of said cartridge holder, a gear carried by said lever in mesh with said rack, means carried by said lever and adapted to be actuated by said gear in cooperation with said lever and rack to retract said firing pin, and means for actuating said firing pin after the same has been retracted.

2. In an alarm mechanism, the combination with a suitable support, of a stationary segmental rack, a stationary segmental cartridge-holder having its axis coincident with the axis of said rack, said cartridgeholder having radially directed cart-ridge chambers formed in its periphery, a pivoted lever having its axis coincident with the axes of said rack and cartridge holder, a housing mounted on said lever and positioned over said cartridge holder, a reciprocatable firing pin positioned in said housing, means for actuating said firing pin, and means cooperating with said lever and rack for retracting said firing pin.

3. In an alarm mechanism, the combination with a suitable support, of a stationary rack, a stationary cartridge holder containing a cart-ridge chamber, a pivoted lever, means carried by said lever for firing a cartridge placed in said chamber, means cooperating with said rack and lever for retracting said firing means, means mounted in part onsaid lever for preventing the movement of said lever or the operation of said firing means, and means for retracting said preventive means.

1. In an alarm mechanism, the combination with a casing forming a suitable support, ofa stationary segmental rack posi tioned in said casing, a stationary segmental cartridge holder positioned in said casing having its axis coincident with the axis of said rack, a pivoted lever extending into said casing and pivoted therein having its axis coincident with the axes of said rack and holder, a gear mounted on said lever and engaging said rack and adapted to be actuated by said rack in cooperation with said lever when said lever swings in operative direction on its pivot, a firing pin carried over said cartridge holder by said lever, said firing pin being provided'with a shoulder adapted to be engaged by retracting means, means for actuating said firing pin, a ratchet wheel mounted on the shaft of said gear wheel and adapted to turn therewith. a retracting wheel loosely mounted. on the shaft of said gear wheel and provided with retracting pins adapted successively to engage said shoulder on said firing pin to retract said pin, a dog mounted on said loose wheel and adapted to be engaged by said ratchet wheel and to rotate said loose wheel in operative direction, means for temporarily preventing the operation of said wheels, and means for governing the speed of rotating said wheels.

5. In an alarm mechanism, the combination with a suitable support of a series of stationary cartridge chambers, a stationary rack, an automatically movable firing-pin carriage, a firing pin adapted to be carried thereby into firing position with respect to each of said chambers successively, retracting means mounted on said carriage and engaging said rack and adapted in cooperation with said carriage and rack to retract said firing pin during the passage thereof In testimony whereof I hereunto aifix my from operative position with respect to one signature, in presence of two witnesses.

of said chambers to operative position with respect to a succeeding one of said chambers, CHARLES OLSON 5 means for temporarily preventing the move- Witnesses:

ment of said carriage, and means for re- M. O. ALBENBERG,

tracting said preventive means. C. T. CRANDALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

